Gravitational pull from the sun, and that's really it!
Yeah that's pretty much it. But want to know is how it works? The sun has a huge gravitational pull because its bigger than the planets, but so that we don't get sucked in with the moons and other planets because they keep us just in line. The planets want to just keep going straight outward instead of around but the sun has the perfect amount of pull that keeps us going around the sun. Good question by the way.
The reason why we do not fall into the sun due to gravity is that the Earth is moving in its orbit at nearly 70,000 mph. This velocity counters the pull of gravity to keep the orbits stable.
Electromagnetic force
The force of gravity between the planet and the Sun keeps the planet in its orbit. The force works both ways but the Sun is so much more massive that it's the planet that appears to go round on a string.
The Sun's gravity pulls the Earth towards the Sun, but the Earth is also moving sideways along its orbit, so the net effect is that the Earth keeps on going round in its almost circular orbit.
There are only 4 different forces: Strong, Weak, electromagnetic and gravity. Gravity is the one responsible for keeping planets orbiting the sun
there are 2. momentum keeps the planet moving forward, and gravity keeps the planet from flying away from the sun
Centripetal force caused by gravity keeps planets in orbit around the Sun.
gravity and inertia
It was Isaac Newton who figured out that the force of gravity keeps planets in orbit around the sun.
Gravity.
The force of universal gravitation and momentum.
The suns huge gravitational force keeps the planets in an orbit around it.
the suns gravity keeps the planets in orbit
gravity
The gravitational attraction by the Sun.
Gravity
Gravity
The Sun's strong gravity keeps all the planets in orbit around it.
The question probably means "What keeps the planets in orbit around the Sun?" The answer to that is : The Sun's gravitational attraction provides the force needed to keep the planets in orbit. This force doesn't pull the planets any closer to the Sun, but it stops the planets moving away (at a tangent to their orbits) due to their own velocities.
Gravity is the force that holds a planet in orbit around the sun. Inertia keeps the planets spinning.